Wikipedia
EmCare
EmCare Holdings Inc., or EmCare, is an American provider of physician services for emergency departments, inpatient physician services, acute care surgery, inpatient and tele- radiology programs and anesthesiology services. Founded in 1972, EmCare has more than 1000 contracts with client hospitals in 42 states.
Laidlaw acquired EmCare in 1997. In 2004, Laidlaw sold Emcare and American Medical Response to Onex. Onex formed Emergency Medical Services Corporation as the parent of its two acquisitions. EMSC went public in December of that year. In 2011, EMSC was acquired by Clayton, Dubilier & Rice. In 2013, EMSC became Envision Healthcare and went public as EVHC.